Lewis watson doren



(No Model.)

L. W. DOREN. SASH BALANCE.

No. 409,569. Patented Aug. 20, 1889.

FIGJ- UNITED STATES PATENT OFFicE.

LEWIS IVATSON DOREN, OF ST. LOUIS, MISSOURI, ASSIGNOR TO HENRY SOHMASEN,OF SAME PLACE.

SASH-BALANCE.

SPECIFICATION forming part of Letters Patent No. 409,569, dated August20, 18.89.

Application filed A ril 10, 1839. Serial No. 306,680. (No model.)

To all whom it may concern.-

Be it known that I, LEWIS W'ATSON DOREN, of the city of St. Louis, inthe State of Missouri, have invented a certain new and useful Improvement in Vindow Attachments, of which the following is a full, clear, andexact description, reference being had to the accompanying drawings,forming part of this specification, and in which- Figure I is anelevation, part in section, illustrative of my invention. Fig. II is anenlarged side View of the attachment removed. Fig. III is an enlargededge view.

My invention relates to a device for assisting in raising or loweringawindow-sash, and which also serves the purpose of a safety device, whichwill prevent the window from being opened from the outside; and myinvention consists in features of novelty hereinafter fully described,and pointed out in the claims.

Referring to the drawings, 1 represents the window-frame. 3 the lowersash. To the frame 1 is secured a bracket 4, to which is pivoted at 5 aspringdrum 6. The spring is illustrated at 7 in Fig. II, one end beingsecured to the drum at 8 and the other end to the central spindle orbracket lat 9. The drum has a flange 10 on one end and a flange 11 onthe other end. Between these flanges a cord or cable is wound upon thedrum, and its opposite ends extend upward and downward above and beneaththe drum, and are secured to the sash at 14. The flange 11 of the drumis provided with. notches 15, with which engages one end 16 of a lever17, pivoted at 18 to the bracket 4:. (See Figs. I and II.) The end ofthe lever 2 represents the upper and-- 17 extends beyond theWindow-frame, as shown in Fig. I, and by pressing downward on its outerend its inner end will be raised out of engagement with the notches ofthe flange 11. WVhen the lever is disengaged from the drum, the actionof the spring tends to lift the sash, and thus assists in opening orclosing it, the lower part of the cable 12 winding upon the drum as thelower part unwinds.

Besides assisting in raising the sash, the device holds the sash to anyadjustment, as When the lever 17 is in engagement with the drum it willbe impossible to move the sash 7 either up or down.

I claim as my invention- 1. In combination with a window-sash, aspring-drum provided with notches, a cable attached to the drum and tothe sash, and a pivoted lever engaging the notches in the drum andhaving an end projecting inward beyond the pivot for engaging the drumand an end projecting outward beyond the pivot for engagement by thehand, substantially as and for the purpose set forth.

2. The combination, with a window sash an d frame, of a bracket securedto the frame, a spring-drum having a notched flange and journaled in thebracket, a cable secured to the drum and extending in both directionstherefrom and secured by its opposite ends to the sash, and a pivotedlever engaging the notches of the drum-flange, substantially as and forthe purpose set forth.

LEWIS IVATSON DOREN. In presence of- EDW. S. KNIGHT, BENJN. A. KNIGHT.

